Improvement in stoves



METCALF & BOCK.

Stove Patented April 28, 1863.

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UNITED STAT S PATENT OFFICE.

DAV ID H. METGALF AND CHARLES F. BOOK, OF BATTLE GREEK, MICHIGAN.

IMPROVEMENT IN STOVES.

Specification forming part of Letters Patent No. 38,319, dated April 28, 1863.

To aZZ whom it may concern:

Be it known that we, DAVID H. METoALF and CHAS. F. BOOK, both of Battle Greek, in the county of Calhoun and State of Michigan, have invented a new and Improved Stove; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a vertical longitudinal section through the stove. Fig. 2 is a section through the stove, taken in the vertical plane indicated by the red line 9 y in Fig. 1. Fig. 3 is a horizontal section through the stove, taken in the plane indicated by the course of the red lines 2 z marked on Figs. 1 and 2.

Similar letters of reference indicate corresponding parts in the three figures.

The object of this invention is to so construct a sheet-iron, air-tight, or drum stove that it will serve the double purpose of an airheater for warming other apartments than its own, and of a radiator for giving out its heat directly into the apartment in which it is placed. Our object is, also, to so construct such a stove that the air-heating chamber can be supplied with cold air in such quantities as the heating-surfaces or the condition of the fire will thoroughly heat, using at the same time the heat which is usually radiated from the bottom of the fire-box into the room, to assist in warming the air previously to its entering the air-chamber and being conducted thence to other apartments, as will be hereinafter fully explained.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

A represents the base of the stove, which, in a horizontal plane, is a plate of an elliptical shape. This base-plate is mounted on legs a a a a, and is constructed with an elliptical depression in it, which forms the bottom b of the fire-box B, and leaves a narrow surface around the more elevated portion of the base, which is perforated, as shown in Figs. 1, 2, and 3 of the drawings at c c c. Surrounding the firebox is the elliptical fire-wall U, and outside of and surrounding this fire-wall is d, between the two walls 0 D, and this space forms the air-chamber or air-heating chamber.

E is a convex elliptical plate or covering for the bottom of the stove, having a pipe, 0, in its bottom, which can be closed by a damper, c. This plate E is fitted to the bottom of the stove, as shown in Figs. 1 and 2 of the drawin gs, so as to form a chamber, E, which communicates with the air-chamber d, surrounding the fire-box B, through the perforations c c c. The air, therefore, which is let into the chamber E beneath the stove, will, as it is warmed, gradually pass upward through the perforations c c c and come in contact with th wall (3 of the reheating-chamber d, where it will be highly heated, and can be conducted from thence through the exit-passage'f whenever it may be desired, or through the register-openings g g directly into the room. The upper end of the air-chamber dis closed tightly, and above this chamber (1 and the fire-box B a single wall-chamber, G, is arranged, which is closed at its top by a cap, G, that may have a hinged door or register in it if desired- The stove is supplied with fuel through the door-opening h, and the escape for the products of combustion is through the stove-pipe hole 0;. f is a register for supplying the lire with air.

It will be seen from this description that the bottom part or one-half only of the stove is surrounded-bottom and sides-by a jacket, D, which forms an air-heatin g chamber around the fire-box, or the hottest part of the stove; also, that the upper half of the stove consists of a single wall of thin sheet metal, which will radiate its heat directly into the room. We combine in this way in one stove, and that a sheet-iron or drum stove, the advantages of an air-heater and a direct radiator, the heated air being conducted oil into another apartment, when desired, for warming that apartment. or all the radiating and airheating properties of the stove may be employed for warming the room in which the stove is placed. When it is desired to do this, the damper in the opening f should be closed and the registersyin the openings g g opened.

It is well known that the air-tight or sheetiron drum stove, as it is commonly termed, is

arranged the jacket I), which leaves a space, i used chiefly where a quick fire is required, and

that when heated these stoves radiate a large proportion of their heat, and it the fire is not kept up the stove rapidly cools again. Now, as these stoves give out more heat when the room is once warmed than is really required, it is desirable to economize this heat and use it for Warming other apartments. In order that these two objects may be accomplishedviz., to warm the apartment containing the stove, and also the adjoining apartment- -we form the air-heating chamber so that it will cover only one'hali', or more or less, of the heating-surface of the stove.

By this arrangement We are enabled to economize the heat which in the common drums is carried off through the chimney in consequence of filling the bottom of the stove with ashes previously to making a fire in the stove. The chamber E, which receives the cold air to be heated, serves the purpose of the ashes in protecting the floor beneath the stove, and it also brings air in'contact with the heated bottom I), which is thus heated and used for warming purposes as above described.

Externally the stove constructed as above described presents a neat and handsome appearance, and it can be'made and furnished to the market for a sum not much exceeding that charged for the common single-wall drumstove.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. Com bining with a sheet-iron airtight stove a short air-heating chamber, d, perforated bottom a c c, airheating chamber E, and exit-pipes g g g, substantially as described.

2. A sheet-iron air-tight stove having the double bottoms b E and the air-space E, substantially as and for the purposes described;

3. A sheet-iron air-tight stove so constructed with conducting-pipes f or their equivalents, that it'is an air-heater below and a radiator above, in the manner described 4. The damperopenings g g and exit-pipe in combination with the air-chambcrs d E and single wall'top G, substantially as described.

DAVID H. METGALF. CHAS. 15. BOOK.

Witnesses:

W. H. MAYNARD, I. B. RU'r'r. 

